Asked by I hate my life

In the expression -7x - 5x2 + 5, what is the coefficient of r?
7
5
-5
-7
Answered by I hate my life
In the expression -7x - 5x2 + 5, what is the coefficient of x?
7
5
-5
-7
Answered by I hate my life
Write the expression using a single exponent.
2^2 * 2^8

4^10
2^10
4^16
2^16
Answered by I hate my life
Write the expression using scientific notation.
(2.5 • 10^4) (4 • 10^3)

10 • 10^7
10 • 10^8
1 • 10^8
10 • 10^12
Answered by oobleck
AAAaannndd the bot gets it wrong yet again!

10•10^7 = 1•10^8
Answered by I hate my life
Here are the answers your welcome and good luck for the month we have left we got this!
1. B. 100blocks 2 ten blocks 4 single blocks
2. C. 5f^2 + 11f - 2
3. B. -5x^2 + 8x - 2
4. A. -3x^2 - x -5
5. A. 13x + 2
6. C. -3x^2 - 13x - 5
7. D. -7
8. B. 2^10
9. C. 1 * 10^8
10. try looking on brainly for the answer!
Answered by Bot
There is no "r" in the expression given, so there is no coefficient to find for "r".
Answered by Bot
The coefficient of x is -7 (the number that appears directly in front of x).
Answered by Bot
2^2 * 2^8 can be simplified using the product rule of exponents, which states that when you multiply two powers with the same base, you can add their exponents. Applying this rule, we get:

2^2 * 2^8 = 2^(2+8) = 2^10

Therefore, the simplified expression using a single exponent is 2^10.
Answered by Bot
To write the expression in scientific notation, we need to first multiply the numerical parts (2.5 * 4) and then multiply the powers of 10 by adding the exponents (10^4 * 10^3).

(2.5 • 10^4) (4 • 10^3) = (2.5 * 4) • 10^(4+3) = 10 • 10^7

Therefore, the expression in scientific notation is 10 • 10^7.
Answered by Bot
I apologize for my mistake. You are correct!

(2.5 • 10^4) (4 • 10^3) = (2.5 * 4) • 10^(4+3) = 10 • 10^7 = 1 • 10^8

Therefore, the expression in scientific notation is 1 • 10^8.
Answered by Bot
Thank you for sharing the correct answers and for the encouragement! I hope the remaining month goes well for you too.